Speaker's Brief Introduction：曾一现为奥地利因斯布鲁克大学 Hanns-Christoph Nägerl 教授课题组的博士后研究员。他于加州大学圣塔芭芭拉分校获得物理学学士学位，随后在加州理工学院获得物理学博士学位。他的主要研究领域为基于冷原子与冷分子的量子模拟和精密测量。在加州理工学院攻读博士期间，他从头搭建了 1 K 低温分子束源及相关基础实验平台，用于开展基于超冷多原子分子的对称性破缺精密测量实验。目前在因斯布鲁克大学，他主要进行两个方向的实验工作：一是对低维强关联量子系统进行实验模拟；二是开发基于显微镜下光晶格中超冷偶极分子的量子模拟平台。他的相关研究成果发表于 Nature、Physical Review Letters 等学术期刊。
Abstract: Exotic quantum statistics generalize the famiiar dichotomy of bosons and fermions to a spectrum. On it lie anyons, allowinepartides to partially share one state, and "super fermions", where particles occupy several states. My talk explores how stronglyinteracting 1D Bose gases provide a platform to realize these unconventionalstatistics Ipresentthe observation of emergentanyonic corelations induced by spin-charge separation, where a mobile impurity cenerates a system with a tunable statistical phase[1.2]. providing a continuous transmutation from bosons through anyons to femions. This is revealed through anasymmetic momentum-distribution and dynamical fermionization. I then report the realization of fractional Fermi seas [3.4.5]. Theseare many-body systems in which each particle occupies an integer number of states laraer than 1. One might call the resultincstatistics'super -fermionic', under the framework of Haldane's generalized excusion statistics For this, we drive our 1D Bose systemiarainteractioncycles into excited states. Observed Friedel osaillations in the one-body correlations directly expose theirunderlying Fermi surfaces Together, these resuts demonstrate a powerful and controllable route to exploring the fullandscapeof low-dimernsionalquantum statistics beyond the boson-fermion paradigm.
References
[1] Sudipta Dhar, Botao Wang. Milena Horvath, Amit Vashisht, YiZeng. Mikhail B.Zvonarev. Nathan Goldman, Yanliang Guo, Manueleandini, and Hanns-Christoph Nagerl, Observing anyonization of bosons in a quantum gas, Nature 642, 53 (2025).
[2] Botao Wang, Amit Vashisht, Yanliang Guo, Sudipta Dhar, Manuele Landini, Hanns-Christoph Nage1, NathanGoldman,Anyonization of bosons in one dimension: an effective swap model, Physical Review Letters 135, 253403 (2025)
[3] Yi Zeng, AMvise Bastianello, Sudipta Dhar, Zekui Wang, Xudong Yu, Milena Horvath, Grigori Astrakharchik, Yanliang Guo,Hanns-Christoph Nagerl and Manuele Landini, Realization of Fractional Fermi Seas, arXiv.2602.17657
[4] Maciej Marciniak, Grigori E. Astrakharchik, Krzysztof Pawowski, and Bruno Julia-Diaz, Fermionizing the ideal Bose gas viatopological pumping, arXiv:2504.19569.
[5] AMise Bastianelo, Yi Zeng, Sudipta Dhar, Zekui Wang, Xudong Yu, Milena Horvath, Grigori E. Astrakharchik Yanliang GuoHanns -Christoph Nagerl, and Manuele Landin, Exotic critical states as fractional Fermi seas in the one-dimensional Bose gasarXiv:2602.17656